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|2009||2009 4dr SUT 320-hp 5.3L V8 6-sp shiftable automatic 4WD w/low range||17.6||
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|With the 320-horsepower 5.3L V8 engine, 6-speed shiftable automatic transmission, and four-wheel drive w/low range, the 2009 Chevrolet Avalanche has been averaging 17.6 MPG (miles per gallon).
The 2009 Chevrolet Avalanches in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 65 percent of the miles driven). The rest of the miles were in the city (10 percent), in the suburbs (0 percent), and in heavy traffic (0 percent).
In addition, the average 2009 Chevrolet Avalanche in this analysis was driven on flat terrain with a light foot and the AC not used at all.